C++

Forum

 
"Opposite" of cin.fail()?

MI Wright (7)
Is there any way to detect when cin succeeds, like how cin.fail() looks for when it, well... fails?
jlb (4973)
Yes. There are several ways to test C++ streams.
1
2
3
4
5
6
7
8
9
10
11
12
13
 

if(!cin.fail()) 
..,

if(cin.good())
...


if(!cin)
...

if(cin)
...


Chervil (7320)
Normally simply if (cin).

Often, rather than doing say:
1
2
3
 
    int n;
    cin >> n;
    if (cin)

one would prefer this:
1
2
 
    int n;
    if (cin >> n)

Last edited on
MI Wright (7)
Alright, that makes sense. Thanks!
Topic archived. No new replies allowed.